fig9

Figure 9. Sweat-activated batteries. (A) Self-powered smart patch for sweat conductivity monitoring. Reproduced under the terms and conditions of the CC BY^[145]. Copyright 2019, Author(s), published by Springer Nature; (B) Yarn-shaped batteries activated by an ultralow volume of sweat for self-powered sensing textiles. Reproduced with permission^[146]. Copyright 2023, Elsevier; (C) Stretchable sweat-activated battery applied in skin electronics. Reproduced with permission^[147]. Copyright 2022, The Authors. Advanced Science published by Wiley‐VCH GmbH; (D) Bandage-based energy generators activated by sweat. Reproduced with permission^[148]. Copyright 2022, Elsevier; (E) Sweat-activated batteries embedded within garment. Reproduced under the terms and conditions of the CC BY^[69]. Copyright 2022, Author(s), published by Springer Nature; (F) Bio-inspired ultra-thin microfluidics for soft sweat-activated batteries. Scale bar: 5 mm. Reproduced with permission^[149]. Copyright 2022, Royal Society of Chemistry.